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authorTom Schouten <doelie@users.sourceforge.net>2003-01-21 10:27:33 +0000
committerTom Schouten <doelie@users.sourceforge.net>2003-01-21 10:27:33 +0000
commit9b8745d5250c9d0b60c9aa5a77f58a3fcddf1076 (patch)
tree8372b6a414a7124cec57efc9c80845e2bc1b157d /modules/pdp_noise.c
This commit was generated by cvs2svn to compensate for changes in r352,svn2git-root
which included commits to RCS files with non-trunk default branches. svn path=/trunk/externals/pdp/; revision=353
Diffstat (limited to 'modules/pdp_noise.c')
-rw-r--r--modules/pdp_noise.c230
1 files changed, 230 insertions, 0 deletions
diff --git a/modules/pdp_noise.c b/modules/pdp_noise.c
new file mode 100644
index 0000000..f1a4661
--- /dev/null
+++ b/modules/pdp_noise.c
@@ -0,0 +1,230 @@
+/*
+ * Pure Data Packet module.
+ * Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+
+
+#include "pdp.h"
+
+
+
+typedef struct pdp_noise_struct
+{
+ t_object x_obj;
+ t_float x_f;
+
+ t_outlet *x_outlet0;
+
+ void *x_noisegen;
+
+ int x_packet0;
+ int x_queue_id;
+
+ int x_pdp_image_type;
+
+ unsigned int x_width;
+ unsigned int x_height;
+
+} t_pdp_noise;
+
+
+
+void pdp_noise_type(t_pdp_noise *x, t_symbol *s)
+{
+ if (gensym("yv12") == s) {x->x_pdp_image_type = PDP_IMAGE_YV12; return;}
+ if (gensym("grey") == s) {x->x_pdp_image_type = PDP_IMAGE_GREY; return;}
+
+ x->x_pdp_image_type = -1;
+
+}
+
+
+void pdp_noise_random(t_pdp_noise *x, t_floatarg seed)
+{
+ if (seed == 0.0f) seed = (float)random();
+ pdp_imageproc_random_setseed(x->x_noisegen, seed);
+
+}
+
+
+
+static void pdp_noise_createpacket_yv12(t_pdp_noise *x)
+{
+ /* create new packet */
+ x->x_packet0 = pdp_packet_new_image_yv12(x->x_width, x->x_height);
+
+ /* seed the 16 bit rng with a new random number from the clib */
+ pdp_noise_random(x, 0.0f);
+}
+
+static void pdp_noise_generate_yv12(t_pdp_noise *x)
+{
+ short int *data;
+ unsigned int w = x->x_width;
+ unsigned int h = x->x_height;
+
+ h = h + (h>>1);
+
+ data = (short int *) pdp_packet_data(x->x_packet0);
+
+ pdp_noise_random(x, 0.0f);
+ pdp_imageproc_random_process(x->x_noisegen, data, w, h);
+
+ return;
+
+}
+
+static void pdp_noise_createpacket_grey(t_pdp_noise *x)
+{
+ /* create new packet */
+ x->x_packet0 = pdp_packet_new_image_grey(x->x_width, x->x_height);
+
+ /* seed the 16 bit rng with a new random number from the clib */
+ pdp_noise_random(x, 0.0f);
+}
+
+static void pdp_noise_generate_grey(t_pdp_noise *x)
+{
+ unsigned int w = x->x_width;
+ unsigned int h = x->x_height;
+ short int *data = (short int *) pdp_packet_data(x->x_packet0);
+
+ data = (short int *) pdp_packet_data(x->x_packet0);
+
+ pdp_noise_random(x, 0.0f);
+ pdp_imageproc_random_process(x->x_noisegen, data, w, h);
+
+
+ return;
+}
+
+static void pdp_noise_sendpacket(t_pdp_noise *x, t_floatarg w, t_floatarg h)
+{
+ /* propagate if valid */
+ pdp_pass_if_valid(x->x_outlet0, &x->x_packet0);
+}
+
+
+static void pdp_noise_bang(t_pdp_noise *x)
+{
+
+ int encoding;
+
+ /* if we have an active packet, don't do anything */
+ if (-1 != x->x_packet0) return;
+
+ switch(x->x_pdp_image_type){
+
+ case PDP_IMAGE_YV12:
+ pdp_noise_createpacket_yv12(x); // don't create inside thread!!!
+ pdp_queue_add(x, pdp_noise_generate_yv12, pdp_noise_sendpacket, &x->x_queue_id);
+ break;
+
+ case PDP_IMAGE_GREY:
+ pdp_noise_createpacket_grey(x); // don't create inside thread!!!
+ pdp_queue_add(x, pdp_noise_generate_grey, pdp_noise_sendpacket, &x->x_queue_id);
+ break;
+
+ default:
+ break;
+
+ }
+
+
+ /* release the packet */
+
+}
+
+
+static void pdp_noise_dim(t_pdp_noise *x, t_floatarg w, t_floatarg h)
+{
+ if (w<32.0f) w = 32.0f;
+ if (h<32.0f) h = 32.0f;
+
+ x->x_width = (unsigned int)w;
+ x->x_height = (unsigned int)h;
+}
+
+
+static void pdp_noise_free(t_pdp_noise *x)
+{
+
+ /* remove callback from process queue */
+ pdp_queue_finish(x->x_queue_id);
+
+
+ /* tidy up */
+ pdp_packet_mark_unused(x->x_packet0);
+ pdp_imageproc_random_delete(x->x_noisegen);
+
+}
+
+t_class *pdp_noise_class;
+
+
+
+
+void *pdp_noise_new(void)
+{
+ int i;
+
+ t_pdp_noise *x = (t_pdp_noise *)pd_new(pdp_noise_class);
+
+ x->x_outlet0 = outlet_new(&x->x_obj, &s_anything);
+
+ x->x_packet0 = -1;
+ x->x_queue_id = -1;
+ x->x_width = 320;
+ x->x_height = 240;
+
+ x->x_noisegen = pdp_imageproc_random_new();
+
+ pdp_noise_random(x, 0.0f);
+
+ pdp_noise_type(x, gensym("yv12"));
+
+ return (void *)x;
+}
+
+
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+
+void pdp_noise_setup(void)
+{
+
+
+ pdp_noise_class = class_new(gensym("pdp_noise"), (t_newmethod)pdp_noise_new,
+ (t_method)pdp_noise_free, sizeof(t_pdp_noise), 0, A_NULL);
+
+ class_addmethod(pdp_noise_class, (t_method)pdp_noise_random, gensym("seed"), A_DEFFLOAT, A_NULL);
+ class_addmethod(pdp_noise_class, (t_method)pdp_noise_type, gensym("type"), A_SYMBOL, A_NULL);
+ class_addmethod(pdp_noise_class, (t_method)pdp_noise_dim, gensym("dim"), A_FLOAT, A_FLOAT, A_NULL);
+ class_addmethod(pdp_noise_class, (t_method)pdp_noise_bang, gensym("bang"), A_NULL);
+
+}
+
+#ifdef __cplusplus
+}
+#endif